If You just got the keys to a house you bought.
Then Rekey every exterior door to one new key.
The seller, their agent and any tradesperson who held a copy are now locked out, and you carry a single key. Lock Rekeying

Locked out of a home or business, a key snapped in the lock or a lock that has seized: entry with the least damage, then the door secured again.
When you phone about an emergency we want three things: where the door is, what it is doing, and whether anyone is inside or at risk. From those answers we can say what tools to bring and roughly what the visit will involve.
Home Lockout ServiceYou stepped out to grab the recycling bin and the door swung shut behind you.
Business Lockout ServiceYou signed the lease on the unit last week and the landlord handed over possession, but the previous tenant's locks are still on…
Broken Key ExtractionA roommate tried to help with tweezers, then by gluing the other half to it.
Break-In Damage Lock RepairYou came home to find the front door standing open.
Seized & Jammed Lock OpeningThe shop's lever handle goes down as usual, but the latch inside the mortise case never pulls back.
Lost Keys — Same-Visit RekeyThe renovation wrapped up in the spring.Tap a situation. The answer opens here.
If You just got the keys to a house you bought.
Then Rekey every exterior door to one new key.
The seller, their agent and any tradesperson who held a copy are now locked out, and you carry a single key. Lock Rekeying
If You are renting, and the landlord says the locks were never changed.
Then Ask the landlord to have the locks rekeyed.
Tenants generally need the owner's agreement, and most landlords are glad to do it when asked plainly.
If A tenant moved out and did not return every key.
Then Rekey before the next tenant arrives.
It keeps the same hardware and closes the gap before viewings start. Lock Rekeying
On-site assessment preferred · (289) 367-6857, open 24/7